PE (Polyethylene) is a thermoplastic material that is created through polymerization of ethylene. It is a widely used material known for its durability, flexibility, toughness, and resistance to moisture, chemicals, and UV radiation. This material is also recyclable and has a low impact on the environment, making it an ideal choice for many applications.
The advantages of using PE include its low cost, lightweight, and ease of fabrication. It is widely used in the packaging industry for the production of bags, films, and bottles. Due to its excellent properties, PE is also used in the production of plastic pipes, wire insulation, cable sheathing, and geomembranes.
PE is suitable for use in a wide range of temperatures, from -40°C to +60°C, which makes it ideal for outdoor applications. Its excellent resistance to chemicals and UV radiation makes it ideal for use in harsh environments.
PE can also be used in the manufacturing of toys, medical devices, and sports equipment due to its non-toxic properties. Its ability to resist water and moisture makes it perfect for use in the production of water containers, since it prevents the growth of algae and bacteria.
How PP differs from polyethylene (PE)?
Both PP and PE are very similar, but they also have characteristics that are unique to each other. These features can be maximized depending on:
How they are made and which application they are used for.
PP is the second most used plastic after polyethylene. They both can be designed to be durable and lightweight. These polymers are used in many applications such as bottles and gloves. But PP has crystal-clear transparency than PE. PP has excellent mechanical properties. It has high resistance to fatigue, impact, heat and, freezing.
PE is tough yet light, with good resistance to impact and abrasion. PP is harder and can be used for mechanical and structural applications.
They both are highly malleable and have relatively similar impact resistance. This means strength does not have to be a concern when these plastics are in use. Density is another key factor that differentiates PE from PP. Polypropylene's density is fixed and only varies when it is filled. Polyethylene selection is highly dependent on the varying densities of multiple versions. PE is available in low, medium, and high-density grades. High Density Polyethylene is known for its big strength-to-density ratio. HDPE is considered more rigid than PP.
Here is a quick wrap-up of their main differences:
| Polypropylene | Polyethylene |
|
Propylene monomers make PP It can be produced optically clear PP exhibits a high resistance to cracking, acids, organic solvents and electrolytes It has high melting point and good dielectric properties PP is more rigid than polyethylene |
Ethylene monomer make PE It can only be made translucent like a milk jug PE stand up better in cold temperatures It is a good electrical insulator and offers good tracking resistance PE is sturdy as compared to PP |
